e-Key <span id="jodit_selection_marker_1710494491231_31833385558911864" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Koel<span id="jodit_selection_marker_1710494491232_8118119624576603" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>eria
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Poaceae - Pooideae - Aveneae - Aveninae - Koeleria Pers.

Description:

  • Perennial, tufted, basal sheaths sometimes swollen into bulbs
  • Leaf blade expanded or almost filiform; ligule an unfringed membrane
  • Inflorescence a panicle, contracted, spike-like, dense and cylindrical, often interrupted; spikelets solitary, pedicelled
  • Spikelet 3.5-4.0 mm long, shining, laterally compressed, disarticulating above glumes; glumes ± equal to unequal, ± equal to longer than spikelet, lower sometimes shorter than spikelet, herbaceous, oblanceolate, linear or lanceolate-linear, acute, keeled, hairy or glabrous, with hyaline margins, sometimes mucronate; lower glume usually 1-nerved; upper glume 1-3-nerved
  • Florets 2-4, bisexual or uppermost floret reduced and sterile; lemma 3-5 mm long, longer than glumes, similar in texture to glumes, 3-nerved, keeled, acute to acuminate, entire, sometimes with a mucro or awned (usually minute); palea projecting and conspicuous in mature spikelet, linear or narrowly lanceolate, subacute, 2-keeled, 2-toothed, thinner in texture than lemma, hyaline
  • Lodicules 2, hyaline, glabrous
  • Stamen 3
  • Ovary glabrous; styles distinct, plumose
  • x = 7 (aneuploids, high polyploidy)

Nomenclature:

  • Koeleria Pers.
    • Persoon: 97 (1805)
    • Stapf: 468 (1899)
    • Stent: 301 (1924)
    • Chippindall: 83 (1955)
    • Clayton: 79 (1970)
    • Launert: 69 (1971)
    • Humphries: 218 (1980)
    • Clayton & Renvoize: 127 (1986)
    • Gibbs Russell et al.: 193 (1990)
    • Watson & Dallwitz: 515 (1994).

Distribution & Notes:

  • Global: Species 35-60, temperate regions throughout the world, montane regions of tropical and subtropical Africa
  • Southern Africa: Species 1: Koeleria capensis (Steud.) Nees, mainly high eastern regions, not in Namibia and Botswana

References:

  • CHIPPINDALL, L.K.A. 1955. A guide to the identification of grasses in South Africa. In D. Meredith, The grasses and pastures of South Africa. Central News Agency, Cape Town
  • CLAYTON, W.D. 1970. Flora of tropical East Africa. Gramineae (Part 1)
  • CLAYTON, W.D. & RENVOIZE S.A. 1986. Genera graminum. Grasses of the world. Kew Bulletin. Additional series 13
  • GIBBS RUSSELL, G.E., WATSON, L., KOEKEMOER, M., SMOOK, L., BARKER, N.P., ANDERSON, H.M. & DALLWITZ. M.J. 1990. Grasses of southern Africa. Memoirs of the Botanical Survey of South Africa No. 58
  • HUMPHRIES, C.J. 1980. In T.G. Tutin, Flora europaea 5
  • LAUNERT, E. 1971. Gramineae. Flora zambesiaca 10, 1
  • PERSOON, C.H. 1805. Synopsis plantarum 1. Cramer & Cotta, Tübingen
  • STAPF, O. 1898-1900. Gramineae. Flora capensis 7
  • STENT, S.M. 1924. South African Gramineae. Grasses of the Transvaal as represented in the National Herbarium. Bothalia 1
  • WATSON, L. & DALLWITZ, M.J. 1994. The grass genera of the world, revised edn. CAB International, Oxon